Sash-balance.



No. 642,239. Patented lan. 3U, |900. J. MARX.

SASH BALANCE.

(Application filed May 2 7, 1899.) (N0 MOMI- 2 Sheets-Sheet l.

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` tirarla Prares JOHN MARX, OF NEV YORK, N. Y.

SASHI-BALANCE.

SPECIFICATION forming part of Letters Patent No. 642,239, dated J' anuary 30, 1900.

Application ld May 27,1899. Serial No. 718.492. (No model.)

To all whom t Ntay concern.-

Be it known that I, JOHN MARX, a citizen of the United States, and a resident of New York city, county and State of New York, have invented certain new and useful Improvements in Sash-Balances, of which the following is a specification.

This invention relates to that class of win dows having unbalanced sashes which are so constructed that in lowerngthe sash a spring will be wound up which will subsequently assist in raising thc sash. Thus the manipulation of the sashes is greatly facilitated.

The invention consists in the various novel features of construction fully pointed out in the claims.

In the accompanying drawings, Figure I is a front elevation, partly in section, of my improved window; Fig. 2, a longitudinal section on line 2 2, Fig. l; Fig. 3, a cross-section on line 3 3, Fig. l; Fig. 4, a cross-section on line fl it, Fig. l; Fig. 5, a longitudinal section of part of the window; Fig. 6, a detail of the rod d5.

The letter A represents the frameof the window, of which B is the upper and O the lower sash. To the upper rail of the upper sash B there is secured a box b, within which there is free to turn a shaft b'. The ends of this shaft extend laterally beyond the box and carry the fast ratchet-wheels b2, which engage racks o., secured to frame A. The shaft b' is surrounded by a spiral spring b3, one end of which is fastened to the box b, while its other end is fastened to the shaft.

When the sash is lowered, the shaft 1) in rotating will wind u p the spring,which is held under tension until the sash is raised, when the spring in unwinding will assist in drawing` the sash up. In this way the sash, though unbalanced, may be readily raised and lowered.

In order to hold the sash in any of its positions and permit it to be manipulated from 'the bottom of the window, I employ the following' construction: Secured to the inner side of the windowframe is a long slotted tube d, provided at suitable intervals with transverse notches or slots cl', which open into a common upright slot d2. lVithin the tube d is contained an upright rod cl3, which is reduced at its lower end and there surrounded by a revoluble sleeve dwhich is provided with a transverse arm d5, carrying a drop-handle d, Fig. G. At its upper end the rod (la terminates in an arm di, embraced by the socket of a spring-actuated iinge1d8,which finger is adapted to engage a recess or perforation b4 of box b.

To manipulate the sash, the handle du is so turned that the arm (Z5 is brought into vertical alinement with slot d2, and the sash is raised or lowered to the desired elevation by means of the handle. The handle isvthen swung sidewise to introduce the arm d5 into the proper slot d', and thus lock the sash in position.

Should it be desired to disconnect the sash from the elevating mechanism, this can be easily effected bymwithdrawin g the spring-finger cls from recess b4 when the arm di is opposite the topmost slot d', (dotted lines, Fig. 5.)

The lower sash O is provided on its lower rail with a box c, in which turns the shaft c', carrying the fast ratchet-wheels c2, that engage the racks a of frame A. The shaft c carries on its center a grooved collar c3, engaged by an outwardlyextending springstud c4. At either side of collar c3 the shaft is surrounded by a coiled spring c5, one end of which is attached to the box c, While its other end is attached to the shaft. If the stud c4 is drawn out, the shaft c' is released, and the sash may be raised or lowered, the lowering of the sash causing a winding up of the spring, which assists in subsequently raising the sash, as previously described. Then the stud c4 is released, it will engage the grooved collar c8 to hold the shaft c against rotation, and thus lock the sash in position.

l. In a Window, the combination of a window-frame with a slotted and transversely notched tube secured to the inner side thereof, a rod connected to the sash and embraced by the tube, and a transverse arm revoluble upon the rod and adapted to engage either of the transverse notches and look the sash at different elevations, substantially as specified.

2. In a window, the combination of a sash with a rotatable spring-actuated shaft carried thereby, gear-wheels fast on the shaft, racks engaged by the gear-wheels, a slotted and transversely-notched tube, a rod "within the tube, an arm revoiubly secured to the rod a stud that is adapted to engage the grooved and adapted to engage the notches, and a collar and lock the shaft, substantially as spring-ringer that connects the rod to the sash, specified.

substantially as speeiied.- Signeddby me at New York City, New York, 5 3. In a Window, the combination of a sash this 26th day of May, 1899.

with a rotatable shaft carried thereby, a v

grooved collar and gear-Wheels fast on the JOHN MARX shaft, racks engaged by the gear-Wheels, a Witnesses:

spring surrounding the shaft and adapted to WILLIAM SCHULZ,

1o be Wound and unwound by its rotation, and F. V. BRIESEN.l 

